The Men's Burton [ak] Helium Grid Half-Zip Fleece is the mid-layer for riders who want [ak]-level performance from every piece of their kit. HeiQ Smart Temp technology actively manages heat and moisture to keep you in the performance zone all day, while stretch construction moves with you through every turn and transition. Wear it solo or layer it under a shell — it performs either way.

• Low-Profile for Easy Layering: A slim fit and stretch fleece make for a low profile that layers easily and lets you move naturally.
• Temperature Regulating: HeiQ Smart Temp tech regulates body temperature to keep you cool through changing temps and extended efforts.
• Stink Less: The sustainable odor control of HeiQ Fresh keeps it fresh without limiting breathability.
• Small Details Make a Big Difference: Thoughtful details like stretch thumb loops and a side zip pocket come from rider feedback. Lightweight grid fleece panels increase breathability and manage sweat when you're hiking or working hard.
• Bluesign® Approved: Bluesign® approved product meets strict safety and environmental standards in manufacturing.